CVE-2026-115506

Published: Ott 22, 2026 Last Modified: Ott 22, 2026
ExploitDB:
Other exploit source:
Google Dorks:
HIGH 8,7
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Confidentiality: N/A
Integrity: N/A
Availability: N/A
HIGH 7,5
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: none
Integrity: none
Availability: high

Description

AI Translation Available

libexpat through 2.9.0 contains a denial of service vulnerability because billion laughs protection in accountingDiffTolerated() in xmlparse.c detects entity amplification too late. Attackers can supply a moderately sized XML document with a large DTD and nested entity expansions to consume tens of seconds of CPU per parse.

776

Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')

Draft
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Availability
Potential Impacts:
Dos: Resource Consumption (Other)
Applicable Platforms
Languages: Not Language-Specific, XML
Likelihood of Exploit: Medium
View CWE Details
https://github.com/hannob/lololol
https://github.com/hannob/lololol
https://github.com/libexpat/libexpat
https://github.com/libexpat/libexpat
https://github.com/libexpat/libexpat/issues/1160
https://github.com/libexpat/libexpat/issues/1160
https://github.com/libexpat/libexpat/pull/1433
https://github.com/libexpat/libexpat/pull/1433
https://www.vulncheck.com/advisories/libexpat-through-2.9.0…
https://www.vulncheck.com/advisories/libexpat-through-2.9.0-denial-of-service-v…